Hi Feras,
As far as the use of RF spectrum analyzer is concerned Ranjeet has mentioned it correctly it allows allows the user to calculate and display electrical signals in the frequency domain where as The Electrical Carrier Analyzer (ECAN) compares different results at two different frequencies… So they both will definitely give different values… Very right put forward by Ranjeet… Thanks Ranjeet for your efforts…
Regards
Sahil Singh